On Tue, Apr 19, 2022 at 02:59:46PM -0700, Dan Williams wrote: > ...or are you suggesting to represent CXL free memory capacity in > iomem_resource and augment the FW list early with CXL ranges. That > seems doable, but it would only represent the free CXL ranges in > iomem_resource as the populated CXL ranges cannot have their resources > reparented after the fact, and there is plenty of code that expects > "System RAM" to be a top-level resource.
Yes, something more like this. iomem_resource should represent stuff actually in use and CXL shouldn't leave behind an 'IOW' for address space it isn't actually able to currently use. Your whole description sounds like the same problems PCI hotplug has adjusting the bridge windows. Jason
